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tools: kwboot: Do not modify kwbimage header before increasing its size

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This ensures that kwboot_img_grow_hdr() function still sees valid kwbimage
header.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Stefan Roese <sr@denx.de>
This commit is contained in:
Pali Rohár 2021-10-25 15:13:01 +02:00 committed by Stefan Roese
parent ed792c2938
commit e511cc3b1a
1 changed files with 6 additions and 3 deletions
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9
tools/kwboot.c
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@ -1352,17 +1352,18 @@ kwboot_add_bin_ohdr_v1(void *img, size_t *size, uint32_t binsz)
uint32_t num_args;
uint32_t offset;
uint32_t ohdrsz;
uint8_t *prev_ext;
if (hdr->ext & 0x1) {
for_each_opt_hdr_v1 (ohdr, img)
if (opt_hdr_v1_next(ohdr) == NULL)
break;
*opt_hdr_v1_ext(ohdr) |= 1;
ohdr = opt_hdr_v1_next(ohdr);
prev_ext = opt_hdr_v1_ext(ohdr);
ohdr = _opt_hdr_v1_next(ohdr);
} else {
hdr->ext |= 1;
ohdr = (void *)(hdr + 1);
prev_ext = &hdr->ext;
}
/*
@ -1377,6 +1378,8 @@ kwboot_add_bin_ohdr_v1(void *img, size_t *size, uint32_t binsz)
ohdrsz = sizeof(*ohdr) + 4 + 4 * num_args + binsz + 4;
kwboot_img_grow_hdr(hdr, size, ohdrsz);
*prev_ext |= 1;
ohdr->headertype = OPT_HDR_V1_BINARY_TYPE;
ohdr->headersz_msb = ohdrsz >> 16;
ohdr->headersz_lsb = cpu_to_le16(ohdrsz & 0xffff);